What is the difference between href and src in HTML?

When loading JS, the use is <script style= ' text/javascript ' src= ' js/demo.js ' ></script>
When loading CSS, the use of <link rel= "stylesheet" href= "Css/demo.css"/>

One uses SRC, and the other is href, what's the difference between the two?

The href represents a hypertext reference (hypertext Reference) and is used on elements such as link and a
SRC indicates the source address, on the IMG, script, iframe and other elements

SRC content is an essential part of the page that is introduced. The content of the href, which is associated with the page, is a reference. The difference is that the introduction and the reference.

What is the difference between href and src in HTML?